Daniel Czerwonka-Schröder- Prof. Dr.-Ing.
- Professor (Full) at Bochum University of Applied Sciences
Daniel Czerwonka-Schröder
- Prof. Dr.-Ing.
- Professor (Full) at Bochum University of Applied Sciences
About
29
Publications
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Introduction
The research focus is on automated geodetic monitoring in the fields of mining, natural hazard prevention, and the infrastructure sector. Especially the conceptual design of a quality-assured implementation of a real-time assistance system based on terrestrial long range laser scanning.
Main topics are:
- Terrestrial refraction,
- Georeferencing and registration of point clouds,
- and automated information extraction from multitemporal point clouds based on machine learning procedures.
Current institution
Publications
Publications (29)
Durch den Klimawandel kommt es vermehrt zu gravitativen Massenbewegungen, welche Menschen und Infrastruktur gefährden. Damit diese besser aufgedeckt werden, hat sich das Verfahren des permanenten Laserscannings bewährt, um kritische Bereiche vierdimensional (3D + Zeit) zu überwachen. Besonders im alpinen Raum erzeugen Temperaturgradienten, die insb...
This paper presents an advanced methodology for automatic geodetic monitoring using total stations, employing the open-source software library JAG3D. As part of the BMBF-funded AImon5.0 research project, an extensive installation of geodetic measuring systems was set up in Trier (Germany). In addition to a permanent laser scanner, GNSS, inclination...
Permanent laser scanning technology has been utilized for continuous monitoring of natural hazards over the past decade, owing to its ability to capture high spatio-temporal resolution point cloud time series, termed 4D point clouds (3D space + time). These 4D point clouds from PLS enable the detection of intricate surface changes and deeper insigh...
Das Forschungsprojekt AImon5.0 fokussiert sich auf die Echtzeitüberwachung gravitativer Massenbewegungen am Trierer Augenscheiner, einer geologisch komplexen Felsformation mit hoher Instabilität. Im Rahmen des Projekts wurde ein permanentes Monitoring-System auf Basis eines Laserscanners installiert, der kontinuierlich 4D-Daten zur Erfassung von Fe...
The permanent terrestrial laser scanning (PLS) system has opened the possibilities for efficient data acquisition with high-temporal and spatial resolution, thus allowing for improved capture and analyses of complex geomorphological changes on the Earth's surface. Accurate georeferencing of generated four-dimensional point clouds (4DPC) from PLS is...
Four-dimensional (4D) topographic point clouds contain information on surface change processes and their spatial and temporal characteristics, such as the duration, location, and extent of mass movements. To automatically extract and analyze changes and patterns in surface activity from this data, methods considering the spatial and temporal proper...
A permanently operating long range laser scanner was installed in the Vals Valley (Tyrol) during the summers 2020 and 2021. Within the context of prevention of natural hazards and protection of infrastructures, this sensor should be integrated into a web-based risk management system. This procedure involves four steps: (i) data acquisition within a...
Dieser Beitrag stellt einen webbasierten Monitoringdienst auf Basis eines permanent installierten Long Range Laserscanners (PLS) zur Identifizierung von Hangbewegungen vor, der im Zusammenhang mit der Abwehr von Naturgefahren und dem Schutz von Infrastrukturen eingesetzt wird. Grundlage dieser Arbeit ist ein Datensatz aus dem Valsertal in Tirol, wo...
Terrestrial laser scanners (TLS) are contact-free measuring sensors that record dense point clouds of objects or scenes by acquiring coordinates and an intensity value for each point. The point clouds are scattered and noisy. Performing a mathematical surface approximation instead of working directly on the point cloud is an efficient way to reduce...
As part of the i2MON research project, an integrated monitoring service was developed for the identification and evaluation of soil and slope movements in the context of coal mining. The focus was on the correct integration (to give reliability, accuracy and integrity) of a long‐range laser scanner into a web‐based monitoring system from an enginee...
The objective of this work is the development of an integrated monitoring service for the identification and evaluation of ground surface and slope movements in the context of coal mining, the prevention of natural hazards and protection of infrastructure. The focus is set on the integration of a long-range terrestrial laser scanner into a continuo...
Automatic extraction of surface activity from near-continuous 3D time series is essential for geographic monitoring of natural scenes. Recent change analysis methods leverage the temporal domain to improve the detection in time and the spatial delineation of surface changes, which occur with highly variable spatial and temporal properties. 4D objec...
Virtual laser scanning (VLS) allows the generation of realistic point cloud data at a fraction of the costs required for real acquisitions. It also allows carrying out experiments that would not be feasible or even impossible in the real world, e.g., due to time constraints or when hardware does not exist. A critical part of a simulation is an adeq...
The white paper presents RIEGL technology in the context of permanent areal monitoring. In a joint development DMT has integrated the scanner into its DMT SAFEGUARD monitoring platform in order to offer innovative and tailored monitoring solutions for customers in the mining and infrastructure sectors.
The new system provides real-time, exhaustive...
4D topographic point cloud data contain information on surface change processes and their spatial and temporal characteristics, such as the duration, location, and extent of mass movements, e.g., rockfalls or debris flows. To automatically extract and analyse change and activity patterns from this data, methods considering the spatial and temporal...
The advancement of permanently measuring laser scanners has opened up a wide range of new applications, but also led to the need for more advanced approaches on error quantification and correction. Time-dependent and systematic error influences may only become visible in data of quasi-permanent measurements. During a scan experiment in February/Mar...
